diff --git a/ocaml-calendar.spec b/ocaml-calendar.spec
index 86d1aec..e96aeeb 100644
--- a/ocaml-calendar.spec
+++ b/ocaml-calendar.spec
@@ -16,8 +16,12 @@
 #
 
 
+%bcond_with ocaml_calendar_testsuite
 %define build_flavor @BUILD_FLAVOR@%nil
 %if "%build_flavor" == "testsuite"
+%if %{without ocaml_calendar_testsuite}
+ExclusiveArch:  do-not-build
+%endif
 %define nsuffix -testsuite
 %else
 %define nsuffix %nil